Contents  on 16 March '08

Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

NEOCP Activity  on 16 March '08

The MPC's NEO Confirmation Page has 6 listings: 2 new, 4 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and four updated listings. Of these, five were "one nighters."

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 16 March '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 16 Mar. '08 >>  MPEC 2008-F01 - "06:10 UT" - Daily Orbit Update

Observers  on 16 March '08

Thirteen observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 7 in MPEC 2008-F01 -- 2008 EX84, 2008 EM8, 2008 EE85, 2008 EB32, 2008 DC, 2008 CJ116, 2008 CG
448Desert Moon Obs. in New Mexico, 2 in MPEC 2008-F01 -- 2008 EQ7, 2008 DE
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-F01 -- 136618
H51Greiner Research Obs. (GRO) in Wisconsin, 4 in MPEC 2008-F01 -- 2008 EJ85, 2008 EC69, 2007 VQ4, 2007 PA8
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2008-F01 -- 2008 CL1, 2005 BE2, 2002 TD66
704LINEAR in New Mexico, 17 in MPEC 2008-F01 -- 2008 EL, 2008 EJ85, 2008 EE9, 2008 DY, 2008 DE, 2008 CD22, 2007 RV9, 2005 RD34, 2002 TD66, 53789, 175921, 172034, 170891, 136618, 9400, 5836, 1036
809|program code "|" via La Silla in Chile, 1 in MPEC 2008-F01 -- 2008 EO7
130Lumezzane Obs. in Italy, 12 in MPEC 2008-F01 -- 2008 EL, 2008 EF9, 2008 EE9, 2008 BC22, 2007 RV9, 2005 RD34, 2005 EY169, 2004 CR2, 138205, 137158, 136618, 6037
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-F01 -- 2008 AF4
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPEC 2008-F01 -- 2008 DW, 2008 DK5, 2002 CF26
423North Ryde Obs. in New South Wales, 1 in MPEC 2008-F01 -- 1980
D29Purple Mtn. Obs. XuYi Station in China, 2 in MPEC 2008-F01 -- 2008 EO6, 2007 TU24
291Spacewatch 1.8m telescope in Arizona, 13 in MPEC 2008-F01 -- 2008 EX5, 2008 EV5, 2008 ER7, 2008 EO7, 2008 EN6, 2008 ED69, 2008 EC69, 2008 EA9, 2008 EA8, 2008 DW, 2008 DH23, 2008 DD, 2003 ED50

Impact Risk Monitoring  on 16 March '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2008 ED69NEODyS1455206411.19e-11-6.53-6.530NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/03/11.497 to 2008/03/15.364."
2008 EC69NEODyS14562015-20891412.21e-07-2.61-3.630NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2008/03/11.497 to 2008/03/15.419."
JPL Sentry14552015-21071472.6e-07-2.56-3.640JPL: "Analysis based on 34 observations spanning 3.9224 days (2008-Mar-11.49608 to 2008-Mar-15.41845)." Diameter approximately 1.310 km. from mean, weighted H=17.1.
2008 EA9NEODyS14562041-2089352.17e-05-6.35-6.820NEODyS: "Based on 28 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/03/15.346."
JPL Sentry14552063-210661.7e-05-6.48-6.830JPL: "Analysis based on 27 observations spanning 8.9400 days (2008-Mar-06.40551 to 2008-Mar-15.34549)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2008 ER7NEODyS14562059-2090147.55e-06-2.69-2.720NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/15.294."
JPL Sentry14552050-2105541.4e-05-2.46-2.710JPL: "Analysis based on 45 observations spanning 8.9567 days (2008-Mar-06.33608 to 2008-Mar-15.29275)." Diameter approximately 0.335 km. from mean, weighted H=20.0.
2008 EX5NEODyS14562049-2090772.43e-05-4.23-4.780NEODyS: "Based on 59 optical observations (of which 1 are rejected as outliers) from 2008/03/04.396 to 2008/03/15.215."
JPL Sentry14552050-2101412.4e-05-4.24-4.790JPL: "Analysis based on 58 observations spanning 10.819 days (2008-Mar-04.39523 to 2008-Mar-15.21397)." Diameter approximately 0.057 km. from mean, weighted H=23.9.
2008 AF4NEODyS17192078-208924.33e-05-2.02-2.021NEODyS: "Based on 588 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/03/15.122. NOTE: The Virtual Impactor in 2089/01/09.478 ... is rated as Torino Scale 1."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology  on 16 March '08

Times are UTC for when items were noted or added by The Tracking News.

1719Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
1456Noted that NEODyS has updated its 2008 EA9 risk assessment - see above
Noted that NEODyS has updated its 2008 EC69 risk assessment - see above
Noted that NEODyS has updated its 2008 ER7 risk assessment - see above
Noted that NEODyS has updated its 2008 EX5 risk assessment - see above
1455Noted that JPL Sentry has updated its 2008 EA9 risk assessment - see above
Noted that JPL Sentry has updated its 2008 EC69 risk assessment - see above
Noted that NEODyS has updated its 2008 ED69 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 EX5 risk assessment - see above
Grabbed MPEC 2008-F01 - Daily Orbit Update - see above